ARM: S5PV310: Add AC97 support for SMDK

Enable AC97 audio device on SMDKV310 and SMDKC210.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>